Electronic toothbrush



FIG. 1 is an isometric view of an electric toothbrush illustrating my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a right-side elevation view thereof;

FIG. 4 is a back elevation view thereof;

FIG. 5 is a left-side elevation view thereof,

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawing figures illustrate features of the article of manufacture that form no part of the claimed design. 

CLAIM The ornamental design for an electric toothbrush, as shown and described. 